Quote:
Originally Posted by pinballlooking
Our weather is milder you don’t see metal buildings insulated with spray foam around here. They are now insulating with the foil bubbles.
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Most pole barns/metal buildings are not really "weather tight". They are primarily to keep things dry. Foil bubble insulation would be terribly inadequate if you were building a building that you wanted to heat/cool in SC !!
The OPs 40x60 building (2400 sq ft) could probably be heated and cooled by a 3 ton mini-split heat pump with 3 - 4 air handlers. By "traditional" standards that would be undersized, but with sufficient wall and ceiling insulation and decent windows and doors, I think it would work.